Jarring machine for feeding and straightening stacks of paper



June 4, 1963 G. BUSCH ETAL 3,092,332

JARRING MACHINE FOR FEEDING AND STRAIGHTENING STACKS OF PAPER Filed Aug. 29, 1961 5 Sheets-Sheet 1 June 4, 1963 s. BUSCH El'AI. 3,092,382

JARRING MACHINE FOR FEEDING AND STRAIGHTENING STACKS OF PAPER Filed Aug. 29, 1961 5 Sheets-$heet 2 June 4, 1963 G. BUSCH ETA].

JARRING MACHINE FOR FEEDING AND STRAIGHTENING STACKS OF PAPER 5 Sheets-Sheet 3 Filed Aug. 29, 1961 P w m F n mm M V WW I J M Im June 4, 1963 BUSCH ETAL 3,092,382

JARRING MACHINE FOR FEEDING AND STRAIGHTENING STACKS OF PAPER Filed Aug. 29, 1961 5 Sheets-Sheet 4 jg 7 a W n I m- 70 m {0 77 Q Q 7770 67 77 3 I: i2 .10 ii 'l? 7e 1 :i 75, up a 6d) W LT CAL Ll q Z! P I 7? r,'* =--6.9 wmvroze 7; cm o 71 5 3 km.- gig ill/mm fi 4 #401140,

June 4, 1963 e. BuscH E-TAL 3,092,382

I JARRING MACHINE F OR FEEDING AND STRAIGHTENING STACKS OF PAPER Filed Aug. 29, 1961 5 Sheets-Sheet 5 WQ A United States Patent 3,092,382 JARRING MACHINE FOR FEEDING AND STRAIGHTENING STACKS OF PAPER Gerhard Busch, Heidenkampsweg 48, Hamburg, Germany, and Willi Lenflier, Hohe Liedt 56, Hamburg- Langenlrorn, Germany Filed Aug. 29, 196i, Ser. No. 135,112 Claims priority, application Germany Sept. 1, 1960 16 Claims. (Cl. 2.7189) This invention relates to a jarring machine for feeding and straightening stacks of paper, comprising a jarring table operating at high speed and serving to straighten out irregular stacks of paper to even stacks, which are then fed to a paper processing machine, or the like. Paper jarring and feeding devices of this type usually comprise a table with backing rails which is inclined towards one of its four corners. The four corners of the table are supported on helical springs mounted on a base frame, thereby allowing free movement of the table in any direction. A jarring or impacting device imparts oscillating movements to the table and if desired, shaking movement directed normally thereto. Since these devices are inclined towards one side of the four corners only, they will only operate in this direction.

Furthermore experience has shown that in using these known paper jarring and feeding devices considerable difiiculties were encountered in feeding the straightened paper stacks to a subsequently arranged paper processing machine, since an exact adjustment of the table height of these machines is almost impossible particularly so, if

the stacks of paper which are straightened on the table of the device are very heavy. These difficulties were encountered, because it was not possible to adjust the loaded table slowly to the desired height for transmitting the stack to another machine, so that the stack had to be removed layer-wise.

In addition to this, machines of this type are inherent of the disadvantage that the straightened stack of paper must be pushed from the table of the jarring device on the table of a subsequently arranged paper processing machine, or the like, by the operator of the machine. This handling, which in case of larger stacks whose 'weight may amount up to half a ton, or even more, afr'ords'a considerable physical strength and tallness and therefore is not adapted to be accomplished by women.

The small air cushion below the stack is also insnfiicapacity, since it is in fact impossible for the operator to handle these weights.

Therefore the main object of this invention is to provide a jarring machine in which the inclination of the table plate, or the lower support plate of the table respectively, may be adjusted towards all sides, so that the table may be inclined towards all four corners, and also out of its horizontal position around a horizontal axis.

Another object of the invention is to provide a jarring machine in which the aforementioned means for lowering the table is at the same time adapted to raise or lower the fully loaded table to a predetermined height corresponding to the table height of a subsequently arranged machine, so that the danger of a shock is avoided, since such a shock might necessitate a repetition of the straightening process of the stack of paper.

Another object of the invention is to provide a jarring machine which additionally comprises means for mechanically transporting each straightened stack of paper from the table of the jarring machine to the table of a subsequently arranged machine. In this the difficulty in providing suitable and advantageous transporting means for 3,092,382 Patented June 4, 1963 the straightened stack of paper resides in the fact that the transporting device must remain unaffected by the shaking and vibrating movements of the table plate.

Another object of the invention is to provide a jarring machine having means to considerably reduce the frictional resistance, particularly when large stacks of paper are handled, since the friction might cause an uneven drawing-01f of the stack of paper. In this it has also been found desirable under certain conditions to align the stack of paper under a slight inclining angle on the backing rail formed by the inner surface of side wall of the table.

Another object of the invention is to provide a jarring machine working with better efliciency, necessitating a minimum of labour for its operation, and thereby becoming more economical.

These objects and problems are solved by the invention in that the table support plate is adjustable by a universal joint about two axes disposed normally to each other, that said universal joint is supported Within a rocker arm pivoting around a horizontal axis, and further that said table support plate is movable up and down by said rocker arm. By means of this construction tilting of the table support plate in any desired direction is possible, and therefore this jarring and feeding device may be used universally, especially so since, on account of the numerous possible inclinations, it is no longer necessary to shift the machine, if another inclination is desired, as was hitherto the case in the known machines.

According to the invention the rocker arm is formed by a double arm lever, one arm of which serves for mounting the bearing assembly of the universal joint, while the other arm is carrying adjustable abutments for the pivotal movement of the universal joint about one axis disposed normally to other axis of the universal joint.

The bearing assembly of the universal joint which is rigidly connected with the one arm of the rocker lever is formed in accordance with the invention as a bearing sleeve into which the trunnion connected with the other bearing block of the universal joint is inserted with an intermcdiately disposed thrust hearing. In this the hearing block for the axis of said one rotating movement or pivoting movement respectively, of the table support plate may be integrally formed with the trunnion for the other rotating movement, or pivoting movement respectively.

According to the invention a hydraulically operated piston motor is provided for lifting and lowering. the table support plate, the piston rod of which pivotally engaging a sliding member displaceably arranged within a groove of the bearing block for the trunnion of the universal joint. The desired adjustment of the height may be limited by arranging guide rails on the lateral gusset plates connected \with the table support plate, said guide rails having slots formed therein, in which a slide block connected with one screw bolt of a turn buckle is. guided and limited in its movement by adjustable abutments. In order not to impair the inclination of the table support plate over the different corners the screw bolts of the turn buckle are mounted with ball joints on their fixed points.

Furthermore in accordance with the invention the table support plate is provided with one or a plurality of belt conveyors driven in unison which are adapted to follow the oscillating movements of the table plate by yieldingly supporting tension rollers on the table support plate, which are engaging the lower runs of the conveyor belts. By this arrangement the drive rollers and the return rollers of the belt conveyors do not participate in the oscillating movements of the table plate. But since the conveyor belts are resting on the upper side of the table plate they take part in the movements of the table plate, this being attained because the tensioning rollers mounted on the table support plate and engaging the lower runs of the v I s 3 conveyor belts may yield, or pivot respectively, against the action of springs.

In order to facilitate the removal of the straightened stack the d-ifierent conveyor belts must move evenly. To

this end a number of drive rollers and return rollers corresponding to the number of conveyor belts are anranged each on a common shaft, which are journalled in hearing blocks mounted on the table support plate.

rollers are spacedly arranged in such a manner that practically all paper sizes may be straightened.

To this end the rollers are mounted for tilting their vertical axes into an angle in a plane perpendicular to the side wall and also for shifting their axes in parallel relation to a prior adjusted position, so that by these guide rollers not only the transporting of the stack of paper is facilitated, but also any desired position'may be attained. a

In order to further improve the jarring and feeding machine, there is provided a switching arrangement by which all proceesing steps of the machinemay be controlled, so that it is possible now to not only reduce the number of "the hitherto required workmen, but also to employ even persons afflicted with physical defects, particularly persons afflicted with war injuries.

This switching arrangement consists of. knownswitching means, such as push buton switches, relays, magnets and others, which however are combined in a drawer-like, or box-like arrangement.

In this arrangement the belt conveyor-s may simultaneously be Further features and advantages of the invention will become evident from the description of one embodiment in connection with the drawings which are given by way of example only.

In the drawings:

FIG. 1 is a front elevation of a jar-ring and feeding machine according to the invention shown in a schematic manner;

FIG. 2 is a side elevation of a jarring and feeding machine shown in schematic manner;

FIG. 3 is a sectional view along the line III-III of FIG. 1 showing the arrangement of the universal joint;

FIG. 4 is a side elevation shown in a schematic manner- FIG. 5 is a side view of the table arrangement shown in a schematic manner for a machine according to in an enlarged scale.

FIG. 11 shows the switching diagram forthe machine. The table support plate 1, which is provided in a known manner per so with a table adapted to be oscillated and having side walls 2, is connected by two gusset plates 3 and 4 with a shaft 5 rot-atably supported in a bearing 6. Of the side walls 2 one longitudinally extending wall may be arranged so as to be tilted upwardly, in order to allow a stack of paper, after it has been straightened out, to be pushed on the table of a paper processing machine.

The bearing block of the bearing 6 consists of the bearin-g cover 7 and the base member 8 connected or integral with a trunnion 9. This trunnion is rotatably journalled within a bearing sleeve 10 and supported on a thrust bearing 11, so that the table support plate 11 may be rotated within the bearing sleeve 10 by the shaft 5. At the same time however, the table support plate 1 may be rotated within the bearing 6 together with the shaft 5, so that two rotating movements may be imparted to the table support plate 1. In this it is of deciding importance that the rotating movement of the table support plate 1 about the trunnion 9 in the bearing sleeve '10 may be achieved towards both sides, and that the position adjusted by rotation may be locked.

The bearing sleeve 10 is rigidly connected with one arm 12 of a double anmed lever forming a rocker arm, while the other arm 13' of this rocker arm is connected with an adjustment plate 14, which is provided with two adjustmentscrews 15, 16 abutting With their lower ends in accordance with their adjustment against the plain surface 17 of the bearing cover 7, thereby limiting the pivotal movement of the table support plate 1 around the axis AA.

The rocker arm formed by the lever arms 12 and 13 is mounted on a shaft 18 journalled in bearings 319' and 20 which may be integrally formed with the base plate 21 of the jarring and feeding machine. The rocker arm may be pivoted around the shaft 18 and locked in the desired position, whereby the table support plate 1 also occupies the desired position with respect to its height and inclination.

' In FIG. 2 adjustment means for the bearing sleeve and therewith for the rocker arm are illustrated in form of a jack as they are used in automotive vehicles.

The bearing sleeve 10 is mounted for pivotal movement around the shaft 18, and for achieving this pivotal move 'ment hydraulically operated means 23 are provided comprising acylinder 24 and a. piston 25 provided with a piston rod 26. In the embodiment shown by way of example, the cylinder 2'4 is rigidly connected with the base plate 21 of the jarring and feeding machine, pressure fluid connection 27 and 28 being arranged on the cylinder 24. Within the cylinder 24 the piston 25 and the piston rod 26 are slidingly received, the piston 26 being pivotally connected with a sliding member 30 by a joint 29, the sliding member being guided in a groove of the bearing sleeve 10.

Guide rails 32 are laterally arranged on the gusset plates 3 and 4. In each'of the guide rails 32 a slot 33 is formed within which sliding blocks 34 and 35 are clampably arranged. These sliding blocks 34 and 35 serve to limit the movement of a sliding block 3'6 connected by a ball joint 37 with one screw bolt 38 of a turn buckle 39, while the other screw bolt 40 of the turn buckle 39' is supported by a ball joint 41 in a ball socket, or the like, mounted on the base plate 21 of the jarring and feeding machine.

Above the table support plate 1 the table plate 43 is supported on springs 44 and 45 in such a way that it may be oscillated and vibrated for straightening an irregular stack of paper placed thereon. The table plate 43 is provided with air nozzle 46 through which air is blown for lifting the sheets of the stack of paper.

Above the table plate 43 a plurality of conveyor belts 47, 48, 49, and 50 are arranged which are driven by rollers 51 and are guided around rollers 52. In order to achieve an even driving moment the rollers 51 are mounted on a common shaft 53, While the guide or return rollers 52 are idling on a shaft 54, or are mounted thereon respectively, if the shafit 54 is journalled for free rotation.

The shaft 53 is journalled in bearings 55, 56, and 57 arranged in bearing blocks 58. In the illustrated embodiment the shaft 54 for the return rollers 52 is journalled in the same manner in the bearings 59, 60 and 61 arranged in bearing blocks 62. The bearing blocks 59 and 62 have the form of brackets and are mounted on the table support plate 1, or a corresponding frame respectively, so that they are independent from shaking and vibrating movements of the table plate 43'.

The conveyor belts 47, 48, 49, and 50 are of such a length that they can follow the movements of the table plate 43. To this end each of the conveyor belts is engaged by a tension roller 63 which is mounted on the table support plate 1 by -a hinge 64, and which is urged downwardly towards the table support plate 1 by a spring 65.

The conveyor belts 47-5il slightly project beyond the plane of the table plate 43, so that a stack of paper on the table plate 43, which is slightly lifted due to the air discharged by the air nozzle 46, will rest upon the conveyor belts, when the air discharge ceases, and will be moved by the conveyor belts on the table of 'a subsequently arranged machine without necessitating that the operator has to push the stack.

The width of the conveyor belts 47-50 has been selected so that difierent paper sizes may be conveyed.

Substantially semi circular recesses 66 have been formed in the side walls 2 or the table plate 43 of the jarring and feeding machine serving to receive the guide rollers 67. Self aligning antifriction bearings 68 and 69 are mounted within the guide rollers 67 running on pins which are rigidly connected with supporting plates 7 (l and 71. The rollers 67 may also consist of tubes into which 'the' bearings 68 and 69 may be fitted and maintained by spring rings.

Additional recesses 74 and 75 for receiving the supporting plates 70 and 71 and additional supporting plates 72 and 73 are provided on the side walls 2 serving to adjust and fix theguide rollers 67. For this purpose according to the embodiment shown in FIG. 10, the supporting plate '70 has a threaded bore 76 formed therein into which a "set screw 77 is screwed the point 78 ot which engaging recesses 79 formed in the supporting plate 72. The lower supporting plate 71 may be formed in a similar manner.

In the illustrated embodiment however, the supporting plate 73 is designed for lateral mounting having recesses 80 formed therein which are engaged by a well known spring loaded pin arranged within the supporting plate 71.

The adjustment of the guide rollers 67, for example into an inclined position, as indicated by the dashed center line B-B in FIG. 10. is achieved by bringing the set screw 77 into engagement with the recess disposed next to the inner side of the side Wall, whereby the supporting plate 70 is displaced about the spacing between two recesses 79. The inclined position is possible by using self aligning antifriction bearings.

If a parallel displacement of the guide rollers relative to their vertical axes, or an inclined position to which the rollers 'had been adjusted before, the supporting plates 70 and 71 must be adjusted equally to the same spacing. The parallel displacement or a guide roller 67 has been illustrated in FIG. 9 in dashed lines.

FIG. 11 shows the switching diagram for controlling the operating steps of the machine. According to this layout a main switch 81 with a signal lamp 82 is provided for all the switching operations. The vibrating operation of the machine is started by the push button switch 83 and stopped by the push button switch 84. All the other operating steps are controlled by the push button switch 85 and the limit switch 86, before which a timing relay 87 is arranged.

In the circuit between the switches 85 and 86 the different relay switches with the corresponding limit switches are arranged.

When the vibrating operation of the machine is started by actuating the switch 83 the relay 83 is attracted, and the table together with the stack of paper to be straightened is in an inclined position. After the straightening operation is finished the vibrating operation is stopped by actuating the push button switch 84. Now the push button switch 85 is depressed, thereby causing through the relay 89 that the table is adjusted to its horizontal position and is lifted to a predetermined level corresponding to the table height of the subsequently arranged paper processing machine. Hereupon this step is stopped by the limit switch 90 in correspondence with the timing relay 87. Simultaneously the advance movement of the machine towards the subsequently arranged machine is started by the relay 91, and after completion is stopped by the limit switch 92, now the circuit for lifting the rear side wall of the table is closed by the relay 93, and the wall is also lifted to a predetermined height. The operation is stopped by the limit switch 94. Now the .conveyors for removing the stack of paper are started by the relay. After the stack of paper has been removed the limit switch 96 will cause that simultaneously the conveyors are stopped, the rear side wall of the table is lowered by the relay 97, and the return movement of the machine to its original position is initiated by closing the magnet 98 and the relay 99. The lowering of the rear side wall is terminated by the limit switch 101 and the return movement of the machine is stopped by the limit switch 102. 103 is a control transformer, 104 a terminal board, and 105 the required fuses.

The entire switching arrangement according to the invention is arranged within a box, or drawer-like structure which may be mounted on the machine, or in a separate control desk.

What we claim is: 1 v

1. A jarring and feeding machine for straightening a stack of paper and transferring the straightened stack to a subsequently arranged paper processing machine comprising in combination: a table receiving an irregular stack of paper and having backing means for the paper arranged thereon, said table being resiliently supported on a table supporting plate; power operated means jarring said table relative to said table supporting plate; a universal joint carrying said table supporting plate for tiltable adjustment of said table supporting plate and said table about two axes extending normally to each other; a rocker arm mounted with one end on the machine base for pivoting movement around a horizontal axis and serving to rotatably support said universal joint; power means mounted on the machine base and tiltably engaging said rocker arm for raising said table supporting plate together With said table to a predetermined height, and

lowering the same to a convenient loading position.

2. A jarring and feeding machine according to claim 1, in which the rocker arm is formed by a double arm lever, one arm of which serves for mounting the bearing assembly of the universal joint, while the other arm is carrying adjustable abutments for the pivotal movement of the universal joint about one axis disposed normally to other axis of the universal joint.

3. A jarring and feeding machine according to claim 2, in which the bearing assembly of the universal joint which is rigidly connected with the one arm of the rocker lever is formed as a bearing sleeve into which a trunnion connected with the other bearing block of the universal joint is inserted with an intermediately disposed thrust bearing.

4. A jarring and feeding machine according to claim 3, in which the bearing block for the axis of said one rotating movement, or pivoting movement respectively, of the table support plate is integrally formed with the trunnion for the other rotating movement, or pivoting movement respectively.

5. A jarring and feeding machine for straightening a stack of paper and transferring the straightened stack to a subsequently arranged paper processing machine comprising in combination: a table receiving an irregular stack of paper and having backing means for the paper arranged thereon, said table being resiliently supported on a table supporting plate; power operated means jarring said table relative to said table supporting plate; a universal joint carrying said table supporting plate for tiltable adjustment of said table supporting plate and said table about two axes extending normally to each other; a rocker arm formed by a double arm lever mounted with its one end 'on the machine base for pivoting movement around a horizontal axis one lever arm of said rocker arm forming a bearing sleeve rotatably receiving a trunnion normally extending from a bearing block of said universal joint the axis of said trunnion and the axis of said bearing representing said'two axes of said universal joint while the other lever arm is carrying adjustable abutments engaging said bear-ing block for limiting the rotatable movement of said table supporting plate around the axis of said trunnion; a thrust bearing mounted within said sleeve of said rocker arm and being engaged by said trunnion; a pressure fluid operated piston motor pivotally engaging with its piston rod a sliding member displaceably guided within a groove of said bearing sleeve for raising and lowering said table support plate by rotating said rocker arm around its horizontal pivoting axis.

6. A jarring and feeding machine according to claim 5, in which for limiting the stroke of said hydraulic means guide rails are provided on lateral gusset plates of the machine, said guide rails having slots formed therein, in which a slide block connected with one screw bolt of a turn buckle is guided and limited in its movement by adjustable abutments.

7. A jarring and feeding machine according to claim 6, in which the screw bolts of the turn buckle are mounted with ball joints on their fixed points.

8. A jarring and feeding machine for straightening a stack of paper and transferring the straightened stack to a subsequently arranged paper processing machine comprising in combination: a table receiving an irregular stack of paper and having backing means for the paper arranged thereon, said table being resiliently supported on a table supporting plate; power operated means jarring said table relative to said table supporting plate; a universal joint carrying said table supporting plate for tiltable adjustment of said table supporting plate and said table about two axes extending normally to each other; a rocker arm mounted with one end on the machine base for pivoting movement around a horizontal axis and serving to rotatably support said universal joint; power means mounted on the machine base and tiltably engaging said rocker arm for raising said table supporting plate together with said table to a predetermined height and lowering the same to a convenient loading position; power driven conveying means arranged on said table for transferring said straightened stack of paper from said table to said subsequently arranged paper processing machine.

9. A jarring and feeding machine according to claim 8, in which the table support plate is provided with one or a plurality of belt conveyors driven .in unison which are adapted to follow the oscillating movements of the table plate by yieldingly supporting tension rollers on the table support plate, which are engaging the lower runs of the conveyor belts.

10. A jarring and feeding machine according to claim 9, in which a number of drive rollers and return rollers corresponding to the number of conveyor belts are arranged each on a commonshaft, which are journal'led in bearing blocks mounted on the table support plate.

11. A jarring and feeding machine according to claim 10, in which the belt conveyors may simultaneously be driven by the motor which is elfecting the oscillating movement or, if desired, by a separate motor.

12. A jarring and feeding machine according to claim 8, in which guide rollers are provided on the side walls of the table projecting beyond the inner surface of the side walls, said guide rollers being rotatably supported and adjustable and displaceable with respect to their positions.

13. A jarring and feeding machine according to claim 12, in which the rollers are mounted for tilting their vertical axes in a plane perpendicular to the side wall into an angle.

14. A jarring and feeding machine according to claim 13, in which the rollers are mounted for shifting their axes in parallel relation to a prior adjusted position.

15. A jarring and feeding machine according to claim 14, in which the rollers are journalled within their supports in self aligning antifriction hearings or other bearing means allowing a pivotal movement.

16. A jarring and feeding machine according to claim 8, in which nozzle openings for discharging compressed air are provided in the table.

References Cited in the file of this patent UNITED STATES PATENTS 954,136 Roessle Apr. 5, 1910 1,279,493 Aylard et al Sept. 24, 1918 2,277,511 Daneke Mar. 24, 1942 2,707,632 Daneke May 3, 1955 

1. A JARRING AND FEEDING MACHINE FOR STRAIGHTENING A STACK OF PAPER AND TRANSFERRING THE STRAIGHTENED STACK TO A SUBSEQUENTLY ARRANGED PAPER PROCESSING MACHINE COMPRISING IN COMBINATION: A TABLE RECEIVEING AN IRREGULAR STACK OF PAPER AND HAVING BACKING MEANS FOR THE PAPER ARRANGED THEREON, SAID TABLE BEING RESILIENTLY SUPPORTED ON A TABLE SUPPORTING PLATE; POWER OPERATED MEANS JARRING SAID TABLE RELATIVE TO SAID TABLE SUPPORTING PLATE; A UNIVERSAL JOINT CARRYING SAID TABLE SUPPORTING PLATE FOR TILTABLE ADJUSTMENT OF SAID TABLE SUPPORTING PLATE AND SAID TABLE ABOUT TWO AXES EXTENDING NORMALLY TO EACH OTHER; A ROCKER ARM MOUNTED WITH ONE END ON THE MACHINE BASE FOR PIVOTING MOVEMENT AROUND A HORIZONTAL AXIS AND SERVING TO ROTABLY SUPPORT SAID UNIVERSAL JOINT; POWER 